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Finding the Fourth Proportional to 11,808.87, 17,693.87 and 8,251.35

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Solution

The fourth proportional to 11,808.87, 17,693.87 and 8,251.35 is: 12,363.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.87 : 17,693.87 = 8,251.35 : x
  2. Step 2: Convert to fraction form
    11,808.87/17,693.87 = 8,251.35/x
  3. Step 3: Cross multiply
    11,808.87x = 17,693.87 × 8,251.35
  4. Step 4: Simplify right side
    11,808.87x = 145,998,272.97
  5. Step 5: Solve for x
    x = 145,998,272.97/11,808.87
  6. Step 6: Final answer
    x = 12,363.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.